Invention Grant
US09076438B2 Audio processing method and apparatus by utilizing a partition domain spreading function table stored in three linear arrays for reducing storage
有权
通过利用存储在三个线性阵列中的用于减少存储的分区域扩展功能表的音频处理方法和装置
- Patent Title: Audio processing method and apparatus by utilizing a partition domain spreading function table stored in three linear arrays for reducing storage
- Patent Title (中): 通过利用存储在三个线性阵列中的用于减少存储的分区域扩展功能表的音频处理方法和装置
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Application No.: US13329481Application Date: 2011-12-19
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Publication No.: US09076438B2Publication Date: 2015-07-07
- Inventor: Tsung-Han Tsai , Yu-Jie Sha
- Applicant: Tsung-Han Tsai , Yu-Jie Sha
- Applicant Address: TW Taoyuan
- Assignee: NATIONAL CENTRAL UNIVERSITY
- Current Assignee: NATIONAL CENTRAL UNIVERSITY
- Current Assignee Address: TW Taoyuan
- Agency: McClure, Qualey & Rodack, LLP
- Priority: TW100130740A 20110826
- Main IPC: G10L19/00
- IPC: G10L19/00 ; G10L19/02 ; G10L19/008 ; G10L19/035 ; G10L19/12 ; H04B1/66
Abstract:
An audio processing method is disclosed. In the audio processing method, a modified discrete cosine transform (MDCT) algorithm is utilized to transform a present time domain audio signal into a spectrum audio signal. A spreading function (SF) coefficient of each partition domain of the spectrum audio signal is obtained by referencing an SF table, wherein the table is stored in three linear arrays based on non-zero SF-Coefficient values. A masking partitioned energy threshold of each partition domain of the spectrum audio signal is calculated utilizing a logarithmic scale. An audio block type of each partition domain and an SMR of the spectrum audio signal are calculated. Subsequently, the spectrum audio signal is compressed into an audio bit stream according to the audio block type of each partition domain and the SMR. In addition, an audio signal processing apparatus is also disclosed in this invention.
Public/Granted literature
- US20130054252A1 Audio Processing Method and Apparatus Public/Granted day:2013-02-28
Information query
